Home / 639,909.25-960,021.75-190,628.37

Finding the Fourth Proportional to 639,909.25, 960,021.75 and 190,628.37

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Solution

The fourth proportional to 639,909.25, 960,021.75 and 190,628.37 is: 285,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,909.25 : 960,021.75 = 190,628.37 : x
  2. Step 2: Convert to fraction form
    639,909.25/960,021.75 = 190,628.37/x
  3. Step 3: Cross multiply
    639,909.25x = 960,021.75 × 190,628.37
  4. Step 4: Simplify right side
    639,909.25x = 183,007,381,367.05
  5. Step 5: Solve for x
    x = 183,007,381,367.05/639,909.25
  6. Step 6: Final answer
    x = 285,989.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.